All Web App Development Companies in London
Instinctools
5(10 reviews)Your AI-powered Engineering Partner
Top awardedMeet *instinctools - a global AI-powered software engineering company with over 25 years of experience. We help both SMBs and Enterprises build robust, scalable software solutions that excel in functionality and design. Our core services include: Agentic AI enablement Custom software development enhanced by deep AI expertise Digital product engineering Business process automation Legacy system modernization Advanced data analytics and visualization Cloud infrastructure and DevSecOps Headquartered in the USA (Maryland) and Europe (Germany), *instinctools offers convenient locations for meeting and collaborating directly with our clients. We have development centers in Poland, LATAM, India, and Kazakhstan that combine global expertise with a strong price-quality balance to ensure exceptional results across time zones. Our work is backed by ISO-certified quality standards, strategic partnerships with leading tech platform, and a long-standing commitment to engineering excellence. Instinctools holds a broad portfolio of regional and industry-specific certifications, including CIR, HIPAA, and other compliance frameworks required for regulated markets. The 2025 Annual Customer Satisfaction Index is 9.1 out of 10.3 works in Web ApplicationLocated in London, United Kingdom (+4)From €10,000 for Web ApplicationWorked in Construction (+10)Speaks English, German(+1)201-500 membersU1CORE
5(16 reviews)U1CORE — A product studio for multi-sided platforms. Marketplaces, exchanges, auctions, fundraising
Highly recommendedTop awardedYOUR PARTNER TO BUILD MULTI-SIDED PLATFORMS $720M moved through one platform we built. Millions of live listings on another. 300+ products shipped. 🔔 Book a free call: https://calendly.com/hello-u1core/30min 🌐 https://www.u1core.com/ What you get We do: the full platform. Multi-role flows, payments, trust & safety, admin tooling, infrastructure that holds at peak load. You get: a product decision-makers trust on first impression, and users who move through it without friction. So you can: grow revenue, close your round, automate operations, and charge a premium. Services Product Design: UI/UX, design systems, prototyping, platform-native patterns for marketplaces, auctions, exchanges, donation flows. Product Engineering: React, Next.js, Vue; Node.js, Python, .NET; mobile, payments, multi-role architecture, admin tooling, DevOps. Discovery & Strategy: cold-start strategy, trust & safety, take-rate modeling, MVP scoping, UX audits. Custom Development: marketing sites and landing pages for platform companies. Why founders pick us One lane. Marketplaces, exchanges, auctions, donation platforms. We already know how products in your category delivered. We lead. We arrive with a point of view, flag what won't work, and explain why. One team, kickoff to launch. The product you ship is the product we built. Twice the pace. Six weeks where others quote three months. $720M+ processed. CSS Design Awards (2× Site of the Day, 4× Best UX, 4× Best UI, 4× Best Innovation, 4× Special Kudos), Orpetron, TOP 10 on Dribbble. 300+ clients, and the ones who matter come back. If your product only works when two sides of a market trust it at the same moment, that's our entire job. Let's talk.1 work in Web ApplicationLocated in London, United KingdomFrom €10,000 for Web ApplicationWorked in Banking & Financials (+15)Speaks English11-50 membersTRIARE
4.9(11 reviews)TRIARE unlocks IT potential of YOUR business
TRIARE is a WEB and MOBILE software development company based in Europe. We are delighted to offer our services as your long-term partner, taking all technical matters off your shoulders and allowing you to focus on your business development. YOU WILL GET: ✔ In-house team . Work with a dedicated team that is 100% focused on your product and located in the same office. ✔ Efficiency & transparency , as our process is based on Scrum methodology and managed by certified Scrum Masters. ✔ Fast result. Working with us, you will get the first result in 1 week. ✔ High quality, as TRIARE has well-established processes of software development and experienced specialists. ✔ Full cycle development . Our company covers all stages of development, handling everything from Discovery and prototyping to Design, development, and maintenance. ✔ IP rights . From the very beginning, you are the only owner of the intellectual property of your project materials: source code, design, documentation, etc. ✔ Warranty period will be provided for your system for free. ASPECTS OF OUR MINDSET: - Focused on results. We are focused on the result of your business with an understanding of the real goals and KPIs that our team should achieve. - Solution Provider. It means that we always come to you with solutions, not with questions. We take all technical aspects of the project off your shoulders, allowing you to focus on the marketing and business strategies. - We go the extra mile. Being a proactive company, we always think and take a step ahead. TECHNOLOGIES WE USE: - Mobile app development: Kotlin, Java, Swift, Objective-C. - Cross-platform development: Flutter, React Native. - Web frameworks: Node.JS, React.JS, PHP, Ruby on Rails.19 works in Web ApplicationLocated in Cherkasy, Ukraine (+3)From €10,000 for Web ApplicationWorked in Others (+20)Speaks English, Ukrainian51-200 membersDuck.design
4.7(29 reviews)You need design done. Just get it!
Highly recommendedTop awardedYour brand designs are too important to be left in the hands of unreliable freelancers or expensive creative agencies. Why not hire an experienced, full-time designer who knows you by name and your brand by heart? Since its creation, Duck.design has been able to capitalize on a number of areas that currently constitute its strength: - Logo, Brand Guide, Style Guide; - Graphic Design; - Web Design; - UI/UX Prototyping; - 3D Design; - Game design; - Explainer Video, 2D Animation, GIF.Looking for work in Web ApplicationLocated in Greater London, United KingdomBudget on requestWorked in Banking & Financials (+8)Speaks English51-200 membersSigli
5(11 reviews)Software development, Web development, Data Solutions, AI, ML.
Highly recommendedSigli is a forward-thinking software development company specializing in digital product development and digital transformation. Our mission, ‘ Data Science with Purpose, Innovation with Impact ’, drives us to transform innovative ideas into practical solutions. Our services encompass the entire development lifecycle, from initial concept to implementation, ensuring every product we build is high-quality, scalable, and future-proof. Sigli assists businesses in navigating the complexities of digital transformation, modernizing their operations, enhancing customer experiences, and maintaining a competitive edge in the ever-evolving digital landscape. Our team's deep expertise, combined with a commitment to leveraging the latest technologies and best practices, ensures we deliver impactful results for our clients. Our dedication to excellence is further demonstrated by our ISO/IEC 27001 certification, the leading standard for Information Security Management Systems (ISMS). This certification underscores our commitment to maintaining the highest standards of information security, making us a trusted partner for businesses looking to thrive in the digital age.18 works in Web ApplicationLocated in London, United Kingdom (+2)From €10,000 for Web ApplicationWorked in Software & Computer Services (+12)Speaks English, Dutch(+3)51-200 membersMagora
5(6 reviews)PRODUCT DEVELOPMENT TAILORED FOR YOUR BUSINESS
Magora is an AI, Web & Mobile product consultancy that offers digital services to businesses across a broad range of industries, including Healthcare, Education, Retail, eLearning and eCommerce. Whether a custom AI product, B2C or a B2B project, iOS or Android app, first of all, we take the time to understand your goals, your product and the end-user’s needs. Our software development cases are loved by users for their convenience and appreciated by customers for the real value they add to your business.10 works in Web ApplicationLocated in London, United KingdomFrom €10,000 for Web ApplicationWorked in Entertainment & Events (+9)Speaks English11-50 membersCab Engine | Digital Agency
4.9(5 reviews)We specialise in building high-performance teams to power your entire marketing engine.
RecommendedA trusted UK agency of 20 years, our unique partnership model has been the foundation for our client's success. Working with brands all over the world, our dedicated digital teams have driven significant results for our clients tech platforms and performance marketing.4 works in Web ApplicationLocated in Warwickshire, United KingdomFrom €30,000 for Web ApplicationWorked in Others (+8)Speaks English11-50 membersKeyToTech
(0 review)We help startups and companies develop and launch agile software products
Top awardedKeyToTech is a software development agency. We deliver AI, mobile, web, and backend services to companies worldwide.4 works in Web ApplicationLocated in London, United Kingdom (+1)From €5,000 for Web ApplicationWorked in Education (+12)Speaks English, German(+2)11-50 membersConTesta
5(20 reviews)Sell More. Live Better.
Highly recommendedTop awardedWe are a 360° marketing agency that provides comprehensive services so that, with a personalised approach, you can grow, evolve and take your business to the next level. We have clients in 8 countries and we speak English, Spanish, French and German. Our speciality is the personalisation of each campaign we execute, whether they are B2B, B2C, SMEs or large companies. We have an interdisciplinary team of experts in Social Media, Influencer Marketing, SEO, SEM, Web Design & Development and Planning . Our goal is to help you sell more so that you can live better. Contact us and we’ll get back to you within 24h.5 works in Web ApplicationLocated in London, United Kingdom (+4)From €400 for Web ApplicationWorked in Technology Hardware & Equipment (+21)Speaks English, French(+3)11-50 membersCreative Navy
5(22 reviews)Only senior designers. Evidence-based approach.
Top awardedCreative Navy is a UX/UI design studio that tackles complex, high-stakes projects for professional and industrial applications. Using an evidence-based approach, they create intuitive, resilient interfaces for sectors like healthcare, manufacturing, automotive, and energy. They are specialists in embedded GUIs and touch interfaces for mission-critical systems—from surgical and diagnostic devices to automotive HMIs and marine control panels in extreme environments. Their work balances design finesse with operational realities such as latency, constrained screen space, and use under stress, backed by rigorous testing for clarity, cognitive load, and performance in edge cases. Beyond embedded systems, they design technical tools for engineers, clinicians, and analysts: B2B platforms, native desktop apps for research, and real-time data visualization. Their process integrates deep domain understanding, regulatory awareness, and the logic of expert decision-making. With teams in London, Berlin, and Basel, Creative Navy blends global insight with Germanic precision and Swiss reliability. Clients like Miele, Bosch, and Ford value their mix of design excellence, engineering alignment, and strategic thinking. Customers: ✅ Automotive: Jaguar, Hyundai, General Motors, Mazda, Ford ✅ Medtech: B Braun, Medtronic, Zethon, UnitedHealth Group, Humana, Johnson & Johnson, HCA Healthcare, Merck, Siemens Healthineers, Gilead ✅ Saas: Hubspot, Adobe, Zendesk, eToro ✅ Technology: BAE Systems, Siemens, Infineon Technologies, Miele, Philips, Bosch ✅ AI: Perplexity, Arlq, Owkin ✅ Finance: JPMorgan Chase, Bank of America, Goldman Sachs, American Express, Barclays ✅ Public bodies: UNICEF, OECD, Government of Canada, GOV.UK (GDS), Bundesagentur für Arbeit ✅ Other: Amazon, Walmart, ExxonMobile, Hilton, Comcast, PepsiCo, Delta, Linde, Shell, Deutsche Telekom, DHL, E.ON, Discovery Channel31 works in Web ApplicationLocated in London, United Kingdom (+7)From €3,000 for Web ApplicationWorked in Energy & Oil (+27)Speaks English, Danish(+9)11-50 membersGRM Digital
5(5 reviews)Digital marketing and technology that drives measurable growth.
Top awardedGRM Digital is an award-winning digital agency helping ambitious businesses generate sustainable growth through SEO, paid media, content, digital strategy and technology. Since 2009, we've worked with organisations to improve their digital visibility, attract the right audiences and turn digital activity into measurable commercial results. Our marketing capabilities include SEO, PPC and paid search, content strategy and creation, digital PR and authority building, analytics, conversion optimisation and wider digital marketing strategy. We don't treat these channels in isolation. Our teams combine marketing expertise with UX, data, design and technology to understand the complete customer journey, from how prospects discover your business through to how they engage, convert and become customers. For organisations looking for an ongoing digital marketing partner, we develop integrated strategies based around clear commercial objectives. This includes understanding your market and competitors, identifying growth opportunities, building the right channel strategy and continuously measuring and improving performance. Unlike agencies focused purely on marketing activation, GRM also has extensive technical expertise across websites, CMS, eCommerce and digital platforms. This allows us to identify and solve the technical, UX and performance issues that can limit marketing results. Whether you need to increase organic visibility, improve paid search performance, create better content, generate more qualified enquiries or build a long-term digital growth strategy, GRM provides the strategy, expertise and ongoing optimisation needed to deliver measurable growth.3 works in Web ApplicationLocated in West Yorkshire, United Kingdom (+4)From €20,000 for Web ApplicationWorked in Education (+6)Speaks English, Croatian(+2)11-50 membersGWC Tech Hub Limited
5(25 reviews)Digital Marketing Agency and Web Developer Company. Unveiling digital technology
Top awardedDigital Marketing Agency and Web Developer Company. Global World Connection (GWC) is a technology-oriented company (Tech Hub) and a digital marketing agency that helps in promoting unknown businesses that wishess to be known globally in the nearest future. Our aim is to reform businesses and make available top-class support services and solutions to young business owners. Founder: Kalu Silver C (Chukwuebuka)4 works in Web ApplicationLocated in London, United Kingdom (+1)From €1,000 for Web ApplicationWorked in Clothing & Accessories (+6)Speaks English, Chinese(+1)11-50 membersBranding by Garden
5(7 reviews)Living brands
Top awardedWe are Garden, a unique global branding agency who help new and existing brand become new and exciting brands. We seek the unique, learn the unlearn-able, simplify the complicated, build the lovable, invent the unknown and imagine the impossible. Working with large and small organisations, we create compelling brands through research, visual identity, marketing channels and internal channels, the following are some of our services: Brand strategy, Brand naming, Brand creation, Brand engagement, Brand video and sonics, Packaging design, Brand campaigns, Print design, Retail strategy and branded environments, POS designs, Digital design.3 works in Web ApplicationLocated in Greater London, United KingdomFrom €10,000 for Web ApplicationWorked in Real Estate (+11)Speaks English, Arabic(+1)11-50 membersAgile Cyber Solutions Limited
4.9(10 reviews)Transforming Ideas into AI-Driven Web and Mobile Apps.
Highly recommendedFounded in 2012, Agile Cyber Solutions has been helping startups and small and medium enterprises (SMEs) grow with reliable custom software solutions. We specialise in developing AI-integrated products and services that empower SMEs to deliver innovative, modern solutions to their customers. With expertise in both open-source AI models (for privacy-focused solutions) and commercial AI models (for cutting-edge capabilities), we tailor our approach to meet your unique needs. From automating workflows to improving customer experiences, our tools drive efficiency, reduce costs, and enhance the value of your products and services. Get in touch to explore how our AI-powered solutions can transform your business. Our success is rooted in a clear and deliberate approach. We believe in collaboratively challenging solutions and technology choices to refine and align them perfectly. By deeply engaging with business use cases and implementation, we add value beyond coding, turning ideas into practical, impactful solutions. We pride ourselves on the honesty to say no to requests we cannot deliver. By staying super-focused on development and collaborating with experts for areas like UI/UX and SEO, we ensure that every aspect of your project receives the specialised attention it deserves. With a development team in India and a customer-facing team in the UK, we offer the best of both worlds: strong technical expertise and local understanding. Over the years, we’ve successfully delivered more than 350 projects for SMEs across diverse industries, earning a reputation for reliability and innovation. Still unsure? Work with us risk-free. We are so confident in the quality of our solutions that we offer a no-risk, money-back guarantee. If we don’t deliver as promised, we’ll refund your investment—no questions asked. Contact us today to learn more about our offerings and start your risk-free journey to discovering how we can help your business grow.8 works in Web ApplicationLocated in London, United KingdomFrom €5,000 for Web ApplicationWorked in Pets (+7)Speaks English51-200 membersFulminous Software
5(38 reviews)WE LOVE TO BUILD ASK FOR IT AND HAVE IT
Top awardedWe are Fulminous Software, a skilled web and mobile app development company with a proven history of creating popular and profitable apps. We're known for our knack for enhancing existing apps and websites to make them even better, ensuring people keep downloading and enjoying them. Our dedicated team is here to turn your ideas into reality. The company’s biggest strength is its team which I a mix of most ingenious and focused individuals who are adroit in whatever they do. They believe in delivering flawless and reliable solutions to clients that match business needs and drive business growth. We are looking for strategic partnerships from around the globe. If you are interested please contact us today. Client's Feedback About US: https://clutch.co/profile/fulminous-software-private#highlights https://www.bark.com/en/in/company/fulminous-software-private-limited/9AKJO/ Our Key services: * Custom Software development * Mobile App Development (Android App, iPhone App, Cross-Platform App) * Custom Game Development (AR, VR, iOS, Android, NFT, Metaverse, 2D, 3D) * Salesforce Development (Lightning, Implementation, Consulting) * Web Development * Mobile Game Development * Desktop Game Development * Xamarin App Development * Wearable Devices App Development * Enterprise App Development * CRM & ERP Development * Digital Marketing3 works in Web ApplicationLocated in London, United Kingdom (+2)From €1,000 for Web ApplicationWorked in Video games (+9)Speaks English51-200 membersLMI Whatsapp Agent Automatisation
4.8(20 reviews)👉 Stop losing leads to platform restrictions. Start converting on WhatsApp.
Highly recommended🇬🇧 ENGLISH VERSION Most businesses rely on platforms that limit their reach and conversions. LMI WhatsApp Agent helps you take back control by turning WhatsApp into a powerful acquisition and sales channel. We design AI-powered systems that automate conversations, qualify leads, book meetings, and convert prospects in real time. Our approach goes beyond basic automation. We build intelligent workflows tailored to your business to engage your audience instantly and reduce manual work. What we do: Automate WhatsApp conversations Capture and qualify leads instantly Increase conversions and recover lost opportunities Integrate with CRM, websites, and APIs Deploy AI-driven workflows for sales and support In a restrictive digital environment, we offer a direct, scalable, and independent way to connect with your customers. 👉 Turn WhatsApp into your most powerful sales engine. 🇫🇷 VERSION FRANÇAISE La plupart des entreprises dépendent de plateformes qui limitent leur portée et leurs conversions. LMI WhatsApp Agent vous permet de reprendre le contrôle en transformant WhatsApp en un canal puissant d’acquisition et de vente. Nous concevons des systèmes basés sur l’IA capables d’automatiser les conversations, qualifier les leads, prendre des rendez-vous et convertir en temps réel. Notre approche va au-delà de l’automatisation classique avec des workflows intelligents adaptés à votre activité. Ce que nous faisons : Automatisation des conversations WhatsApp Capture et qualification des leads Augmentation des conversions Intégration CRM, sites web et API Workflows intelligents pour vente et support 👉 Transformez WhatsApp en votre moteur de vente le plus puissant.Looking for work in Web ApplicationLocated in London, United Kingdom (+1)From €1,000 for Web ApplicationWorked in Beverage (+1)Speaks English, French11-50 membersTech Vedika Software Ltd
(0 review)Agile in Transformation | Ahead in Technology
Tech Vedika is a global technology services company founded in 2010 and headquartered in Hyderabad, India, with significant operations globally. The company focuses on AI and cloud solutions, serving over 100 clients worldwide with a team of around 200 employees. Led by CEO Sai Sangineni, Tech Vedika has established a strong reputation for delivering innovative technology solutions across various industries. The company offers a wide range of services, including product engineering, AI/ML and IoT integration, cloud services, data analytics, and generative AI solutions. Tech Vedika specializes in advanced technologies such as computer vision and image processing, and it employs Agile and DevOps methodologies to ensure efficient project delivery. Its expertise spans key sectors like healthcare, banking, manufacturing, and retail, where it provides tailored solutions to enhance operational efficiency and drive growth. Tech Vedika is recognized for its customer-centric approach and commitment to quality.Looking for work in Web ApplicationLocated in London, United KingdomFrom €3,000 for Web ApplicationWorked in Clothing & Accessories (+6)Speaks English201-500 membersAkita Intelligent Solutions
(0 review)Leading partner for Microsoft ERP and CRM solutions
We're leading experts in Microsoft Dynamics 365, Power Platform, Copilot AI and SharePoint. Contact our team today to discuss consultancy, development or support.1 work in Web ApplicationLocated in London, United Kingdom (+2)From €5,000 for Web ApplicationWorked in Telecommunications (+1)Speaks English51-200 membersSWC Partnership - part of the global UP Group
4.9(17 reviews)The local agency with a global reach.
Top awarded🇬🇧 Welcome to SWC Partnership. We develop marketing strategies and campaigns to accelerate your sales and brand awareness . SWC is a full service marketing agency that works as an extension of your team . We deliver brand strategy , integrated marketing plans , creative concepts , creative production , transcreation, media planning/buying and campaign reporting . Our services are designed to be integrated into your existing infrastructure, either as a full service partner or for a specific discipline. Our expert teams are highly experienced in working across both B2B and B2C industries; whilst delivering international , national and local marketing solutions. We’re passionate about making a commercial difference to our clients and provide measurable and accountable marketing that drives ROI . We are headquartered in the UK and operate across Europe, with a special focus on the DACH region. We are an agile team of specialists and part of UP, THERE EVERYWHERE , the first global cloud based agency . Headquartered in Stockholm, Sweden , with a further 15 bases including Hamburg , Helsinki , London , New York , Dubai , Shanghai , Switzerland , Amsterdam and Palma among others. We offer a global agency solution whilst connecting you with teams locally . Providing local insight and appreciation of country nuances, we can plan, produce and deliver your international marketing programmes in each of your targeted countries and territories, as if you would in your home market. Through multilingual marketing managers and transcreation experts , we ensure your international sales & marketing is a success . Visit our website to find out more and contact us to discuss your requirements. www.swcpartnership.com Specialist petcare marketing: petcare.swcpartnership.com Specialist tech/manufacturing marketing: tech.swcpartnership.comLooking for work in Web ApplicationLocated in Greater London, United Kingdom (+5)Budget on requestWorked in Automotive (+14)Speaks English, Chinese(+8)11-50 membersTechGropse Pvt. Ltd.
4.9(108 reviews)Next-Gen Apps for Next-Gen User
Highly recommendedTechGropse is a leading mobile app development company headquartered in Dubai with a prominent global presence in the UAE, USA & India. Established in 2015, we transform innovative ideas into reality, becoming a go-to name for businesses seeking stunning, high-performance mobile applications. Vision and Mission We help businesses grow by developing stunning mobile apps that users love. Our mission is to deliver high-quality, personalized solutions that meet the unique needs of every global client as a dedicated partner in your success. What We Do & Strategic Services TechGropse offers end-to-end services to meet all your digital transformation needs: Custom Mobile App & Software Development Expert UI/UX Design & Prototyping Cross-Platform & Native App Development Maintenance and Support AI Chatbot Development Machine Learning & AI Implementation (Agentic AI) Advanced Cloud Computing & DevOps Innovative IoT Development Industry Expertise We excel in developing apps for: Healthcare, FinTech, Logistics, Construction, Retail, Ecommerce, Energy, Insurance, Travel, Electric Vehicles (EV), and Real Estate. Why Partner With Us Using a stack like React, Node.js, Python, and Flutter, our client-focused team is committed to quality, timely delivery, and affordable pricing. We build long-term relationships through collaboration. Connect With Our Global Offices: USA Office: +1 267 327 4760 Dubai HQ: +971 527 984 766 Email: [email protected] Visit: https://www.techgropse.com/contact3 works in Web ApplicationLocated in Dubai, United Arab Emirates (+2)From €3,000 for Web ApplicationWorked in Clothing & Accessories (+13)Speaks English, Arabic(+2)51-200 members